9 



Notices of Big-hone Lick. 167 



Left lower maxillary, with one molar of six points, and an 



empty socket before and behind it. 

 Right lower maxillary, also with one molar, and two empty 



sockets. 



Right lower maxillary, with only the large posterior molar re- 

 maining, and much worn, the sockets of the others obli- 

 terated : evidently an aged individual. 



Right lower maxillary, with the posterior molar, enamel 

 whitish. The enamel is generally, it must be observed, very 

 dark coloured, and sometimes black. 



Left lower maxillary, with two molars of six points, posterior 

 half of the jaw wanting. A young individual.* 



Seventy -two molar teeth, presenting examples of nearly all the 

 changes they undergo, from the state of a mere germ, of 

 which the mastoid points alone remain, to that of an old 

 and worn out tooth, in which the roots are completely os- 

 sified, and remain uninjured ; while the crowns are worn 

 down in such a manner, as to leave the bony substance of 

 the tooth bare of enamel, w^hich merely forms a border 

 round the crown. 



Of these molar teeth there are of the various kinds. 



One with two pairs of points, and an odd shoulder, representing 

 a fifth point, or possibly an indistinct pair. 



Thirty-nine, wdth three pairs of points. 



Fourteen, with four pairs of points, and an odd one. Of 

 these ten belong to the upper jaw, and four, I think, to the 

 lower. 



Fifteen with five pairs of points, and an odd one, or heel. — 

 These are all lower jaw teeth, the posterior molar. 



Two with four pairs, and three small knobs in a row, besides 

 a heel, and lateral tubercular knobs, and 



One with five pairs of points, and two knobs, too irregularly 

 placed to form a pair. These three last are also lower pos- 

 terior molars. 



Five atlas bones, with thirty-one other vertebras, cervical, dor- 

 sal and lumbar. A separate spinal process, though incom- 

 plete, is twenty inches long ; most of them are very much 



* Of the fifteen portions of lower jaws here enumerated, the posterior molar remain- 

 ed in eight. In two of these this tooth had four pairs of points, and an odd point or 

 heel, besides ; in the six others, there were five pairs of points, with from one to three 

 irregular knobs. 



